We just finished this episode last night; it's about nuclear weapons (you can see it here).

Reminder: All our episodes & blurbs have transcripts. The
transcripts (plus credits, bibliography, etc.) are located via the [ transcript / credits
] link below each episode or blurb. A typed-out version is good for
classroom work or individual study. I do the transcripts now because
Pinky types slower than turtles.